Means for feeding coal to boiler-furnaces.



C. B. NEWCOMB.

MEANS FOR FEEDING COAL T0 BOILER FURNACES. APPLICATION man MAR.28.1914.

l q 3 3 8 a Patented May 2, 1916.

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'MEANS FOR FEEDING COAL T BOILER-FURNACES.

Specification of Letters Patent.

Patented May 2, 1916.

Application filed March 28, 1914. Serial No. 828,101.

To all whom it may concern:

Be it known that I, CYRUS B. NEWCOMB, a citizen of the United States ofAmerica, residing at Grand Rapids, in the county of Kent and State ofMichigan, have invented certain new and useful Improve ments in Meansfor Feeding Goal to Boiler- Furnaces; and I. do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as" will enable others skilled in the art to which it appertains tomake and use the same.

My invention relates to improvements in means for feeding coal to boilerfurnaces, and its object is to provide a device whereby coal may betaken from a railway car or other like conveyance and transferred to thefurnace-of a boiler by mechanical means and in regulated quantity, andalso by the same means pulverized to such an extent as to quickly burnwhen it reaches the furnace;

to provide the device with means for controlling the flow of fuel to thefurnace, and to provide the device with various new and useful featureshereinafter more fully described and particularly pointed out in theclaims, reference being had to the accom-- panying drawings, in whichFi'gure 1 is an elevation illustrating an embodiment of my invention;Fig. 2 a sectional detail ofthe gate to shift the flow of the coal,eitherto the bin for containing the same, or to the'furnace as occasionmay require; and Fig. 3 is an enlarged detail of the fan or blowermodified to also act as a pulverizer for the coal passing therethrough.

Like numbers refer to like parts in all of the figures.

1 represents any ordinary steam boiler; 2 the grate of the furnace abovewhich the fuel is burned;.3 a bin for storage of fuel,

7 located at any convenient point above the level of the furnace wherebythe fuelwill flow by gravity from the bin to the furnace; 4 acentrifugal separator to separate the coal from the air used to conveythe same; 5 a valve or gate below the separator to direct the flow ofcoal from the separator, either to the bin 3 or to the furnace, asoocasion may require; 6 a pipe communicating with the separator andleading downward to discharge the coal into the bin 3 7 a similar pipeleading directly from the bottom of the separator to the furnace, and 8a like pipe communicating with the conical bottom of the bin 3 and thepipe 7 close to the.

furnace, to convey fuel from the bin to the furnace.

9 is a gate to control the flow of fuel through the pipe 8.

10 is a pipe communicating with the separator 4 at its upper end andthence extending to any convenient point for conveying the coal from acar 14 or other means of transportation, the coal used being a finegrade of coal adapted to be pneumatically conveyed, for which purpose aflexible pipe 3 is provided to take up the coal from the car 14 andconvey the same to the fan blower 11, whereby it is sucked up from thecar and carried through the pipe 10 to the separa tor l.

12 represents any suitable motor to drive the fan 11. This fan alsooperates as a means of further pulverizing the coal pass ingtherethrough, .for which purpose the interior of the fan casing isprovided with suitable corrugations 15 against which the coal isprojected by the blades of the fan, whereby any lumps of larger sizethan would burn quickly in the furnace are broken up and pulverized andare thus also more readily conveyed and controlled in its flow to thefurnace.

From the foregoing description the operation of this device is readilyunderstood without further explanation.

What'I claim is l Means for feeding coal to a furnace, comprising" aseparator elevated above the furnace, a blower communicating with theseparator, a pipe connecting the bottom of the separator with thefurnace, a fuel bin also located above the furnace, a pipe connectingthe bottom of the separator with the fuel bin, a pipe connecting thebottom 'of the fuel bin with the furnace, a valve to alternately' directthe flow of fuel from the separator to either the, furnace or to thebin, and a valve to control the flow of the fuel from the bin to thefurnace.

2. Means for feeding coal to a furnace,

comprising a blower adapted to-produce an the furnace, a valve toalternately direct the How of fuel from the separator either to thefurnace or to the bin, and a valve to control the flow of fuel from thebin to the furnace.

3. Means for feeding coal to a furnace. comprising a separator above thefurnace, a bin below the separator and above the furnace, a blower, apipe to convey coal to the blower, a pipe to convey coal and air fromthe blower to the separator, a pipe to convey coal from the separator tothe furnace, a pipe to convey coal from the separator to the bin, 21pipe to convey coal from the bin to the furnace, and valves to controlthe flow of coal in the three last named pipes.

41. Means for feeding fuel to a furnace, comprising a blower, a pipeextending from the blower to deliver fuel to a point above the furnace,a storage bin also above the furnace, means for delivery of the fuel bygravity from said point either directly to the furnace or to the storagebin, means for nace, a storage bin also above the furnace,

a pipe extending downward from said point directly to the furnace, apipe extending downward from said point to the storage bin, a pipeextending downward from said bin to the furnace, and valves in saidpipes to direct and control the gravity How of the fuel directly intothe furnace or indirectly into the furnace through the storage tank.

In testimony whereof I affix my signature in presence of two witnesses.

CYRUS B. NEVCOMB. \Vitnesses HAROLD O. VAN ANTWERP, MAE RANKIN.

